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Volume 3
Recycling 2019 & Material Science 2019
July 22-23, 2019
Page 17
Material Science and Nanotechnology
Global Recycling Summit
July 22-23, 2019 | Rome, Italy
6
th
International Conference on
&
Journal of Environmental Geology
Busarin Chongcharoenyanon
Kasetsart University, Thailand
Migration of biobased plastic from biodegradable polyester and thermoplastic starch
B
iobased plastic (BP) was reputed to the environmentally friendly properties. Many researches have focus on improving
the physical and mechanical properties. However, as food contact materials and food packages, the migration test
of BP should be conducted to ensure the safety of consumers. In this research, overall migration of 4 formulas of BP has
been tested. Biodegradable polyester (polylactic acid: PLA) was formulated with thermoplastic starch (TPS) to form
BP sheet samples. They were formulated at the ratio of PLA:TPS as 60:40 and 80:20 with additional of zeolite at 1%
as a compatibilizer. The overall migration tests were conducted follow the Regulation EU 10/2011 on plastic materials
and articles intended to come into contact with food. The chemical migrants from BP samples were extracted in food
simulants. Four food simulants which were represented each kind of foods were 10% ethanol (Simulant A) for aqueous
foods, 3% acetic acid (Simulant B) for acidic foods, 20% ethanol (Simulant C) for alcoholic foods, 50% ethanol (Simulant
D) for dairy fatty foods. The extractions were conducted at the specific conditions, range from 2 h to 10 days at 10 to
70°C which resemble to the intended usage condition. After the extraction, the BP samples were tested for the mechanical
properties compared with the samples before the extraction. The simulants were proceeded to determine the amount of
migrants then compare with the overall migration limit (10 mg/dm2). The overall migration results showed that the BP
samples still have some limitations in application under severe condition of overall migration testing. The mechanical test
show significantly reduction of properties after contact with food simulants. Further investigations are needed to clarify
the proper condition for commercial usage such as the sensory evaluation to clarify the consumer acceptability level of
the reduce mechanical properties.
Biography
Busarin Chongcharoenyanon has background on food science and technology. She interested in food safety especially in microbiologi-
cal and chemical aspect. The safety of food contact materials and food packaging is her main research of interest. She believes that, in
order to improve the safety of the consumer, we can not only focus on the food quality but also the food packaging and the related materials.
busarin.cho@ku.thBusarinChongcharoenyanon
,JEnvironGeol. |Volume3
ISSN:2591-7641